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title: "Custom software: what it really costs" description: "How much custom software costs, and why. What drives the price, the cost over time, and how to scope your budget without surprises." slug: "custom-software-cost-budget" date: "2026-06-26" category: "Field notes" tags: ["custom software", "business software", "budget", "development cost"] author: "Atelicode"#

Custom software: how much it costs, and what drives the price

You go looking for the price of custom software, and you hit a wall. No catalogue, no price tag, just ranges so wide they tell you nothing. That's normal. A tool built for you isn't ordered off the shelf, so it isn't priced off the shelf either. That doesn't make the budget a mystery. It follows a clear logic, and we'll lay it out for you, plainly.

SaaS or custom: the trade-off, kept simple#

The first question that always comes up is the match between an off-the-shelf subscription and bespoke development. Early on, a SaaS solution looks unbeatable: a few dozen euros a month and you're up and running. It adds up while you stay small. The moment your headcount grows, the per-user licences pile up. And above all, you spend your time bending your own processes to fit the tool, instead of the other way around.

Custom business software does the opposite: it fits the way you actually work. The return on investment shows up fast, in admin hours saved and data entry errors avoided. A telling example: for a French bakery opening several locations, we built a platform that unifies the website, the in-store till and the delivery apps in a single dashboard. It isn't a marketing site, it's the tool that runs the business day to day. That's what business software means.

What actually drives the price#

Between a small client portal and a platform handling thousands of orders a day, the budget can easily vary tenfold. It all depends on what the tool has to do. To give you a sense of the range of what we build, here's what weighs most in the quote.

The first factor is the number and complexity of the features. Real time, specific algorithms, a bit of artificial intelligence: all of that takes work. A carpooling platform with real-time trip matching and built-in payment doesn't compare to a simple contact form, of course.

The second is the need to talk to your existing systems through APIs: your ERP, your CRM, your accounting, your till. The more your tool has to connect to other software, the longer the build. On the bakery platform, wiring up the till and the delivery apps was a whole chunk of the project on its own.

The third is standards and the level of security. GDPR, sensitive data, regulatory compliance: none of that gets bolted on at the end. For a prize-draw platform with verifiable draws and full compliance, those requirements shape the entire build from day one.

Then there's the care put into the interface, the UX and UI work. A clear, pleasant journey that doesn't lose the user takes real design, and it counts in the quote as much as in the result.

Who builds your tool, and why it matters#

Once the need is clear, you have to choose who builds it. Two classic routes. A freelancer, ideal for a small, well-defined project. Or an agency, which fields a full team but where you rarely talk to the person writing the code: a project manager relays the message, and yours sometimes gets lost along the way.

There's a third way. A workshop where you talk directly to the person who designs and codes your project, from the first sketch to going live. No middleman, no broken telephone. The hand that builds is the same one that answers you. For a business owner, that's often the difference between a project under control and one that drifts.

On rates, a useful benchmark: in France, the daily rate for a full-stack developer usually runs between 450 and 850 euros, depending on expertise and the technologies involved. It's an order of magnitude, not a quote. Then you choose the contract model. A fixed price sets a figure for a fixed scope, perfect when the brief is tight. Time and materials bills for time spent, ideal when the project has to move as it goes. One protects your cash flow, the other your flexibility.

The cost doesn't stop at launch#

The most common mistake is to budget only for the build months. Custom software isn't a poster you stick up and forget. It's a living structure that grows with you. So you have to think in total cost of ownership, across its whole life.

Budget 15 to 20% of the initial cost each year for maintenance: security updates, bug fixes, keeping up with new browsers, small improvements. Add hosting, from a few hundred to a few thousand euros a year depending on your traffic and data volume.

And a straight word on code quality, because we believe in it. Going with the lowest bidder almost always costs more in the end. Badly built code piles up what's called technical debt. Reworking a shaky architecture or fixing recurring bugs costs far more than laying clean foundations from the start. We build to last, precisely to spare you that.

How to keep your budget down without cutting corners#

Good news: you can keep the spend under control with a bit of method. Three habits change everything.

In the end, pricing custom software is mostly a matter of scoping and straight talk. The clearer your need, the fairer the budget. And the spend is always measured against what it brings you: time saved, fewer errors, a tool that grows with you instead of holding you back.

Got a project in mind? Tell us in a few words what you want to build, and we'll tell you how we'd go about it.

Let's talk about your project

Frequently asked questions#